MinIO is a high-performance object storage system. Prior to version RELEASE.2026-03-26T21-24-40Z, a flaw in extractMetadataFromMime() allows any authenticated user with s3:PutObject permission to inject internal server-side encryption metadata into objects by sending crafted X-Minio-Replication-* headers on a normal PutObject request. This issue has been patched in version RELEASE.2026-03-26T21-24-40Z.
History

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Minio
Minio minio
Vendors & Products Minio
Minio minio

Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
Description MinIO is a high-performance object storage system. Prior to version RELEASE.2026-03-26T21-24-40Z, a flaw in extractMetadataFromMime() allows any authenticated user with s3:PutObject permission to inject internal server-side encryption metadata into objects by sending crafted X-Minio-Replication-* headers on a normal PutObject request. This issue has been patched in version RELEASE.2026-03-26T21-24-40Z.
Title MinIO is Vulnerable to SSE Metadata Injection via Replication Headers
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-31T19:30:31.057Z

Updated: 2026-04-01T13:42:45.444Z

Reserved: 2026-03-26T15:57:52.323Z

Link: CVE-2026-34204

cve-icon Vulnrichment

Updated: 2026-04-01T13:42:41.213Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-03-31T20:16:28.583

Modified: 2026-04-01T14:23:37.727

Link: CVE-2026-34204

cve-icon Redhat

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